Production of refuse derived fuels (RDF)
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Substitute fuels and metal cleaning

Million of tons of waste are produced in the world every day. While the main sources are the industrialized nations, the amount of waste is increasing in emerging economies as well. ANDRITZ Recycling supplies ecologically and economically viable solutions for this deluge of waste.

ANDRITZ employs technologies that combine pre-shredding, post-shredding, sorting, and drying so that the entire flow of waste can be separated into organic and inorganic components.

Valuable fractions, such as metals, can be removed early in the process and appropriately recycled. The metal fraction, often with plastics or textiles still adhering to it, can be cleaned. Composite materials can be broken down with the Universal Cross-Flow Shredder QZ. In the end, the steel scrap and non-ferrous metals can be recovered with a superior purity of 98% – perfect for use in the steel industry or re-processing in foundries.

With minor additional processing, the non-recyclable residual fractions often have a high calorific value making them suitable as a fuel source for cement kilns, steel industry boilers, or for co-firing in power plants.

Metal cleaning plant

Benefits: Substitute fuel and metal cleaning

  • Powerful and reliable pre-shredding
  • Fast removal of the metal fractions
  • Granulating with the Universal Granulator UG and tailored screen sizes
  • Separation after each shredding stage
  • High-quality substitute fuel fraction
  • Metal fraction can be further cleaned with the Universal Cross-Flow Shredder QZ
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Input

  • Household waste
  • Industrial waste
  • Bulky waste
  • Production residues
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Output

  • Plastics
  • Textiles
  • Paper
  • PVC
  • Ferrous fraction
  • Non-ferrous fraction

MSW and C&I waste contain many different materials that need to be separated mechanically into a high- and a low-calorific fraction. This process involves shredding, screening and classifying of the material. Metals, inerts and organics are removed; light fractions with high-calorific value (e.g. plastics, textile and paper) remain. The RDF fraction could be used in the cement industry, steel furnaces or power stations, substituting coal and oil.

The high-quality Universal Rotary Shear UC and Universal Granulator UG are used for primary and secondary shredding. Quickly interchangeable screens allow many different output sizes.


In order to optimize the output quality shredding can be combined with

Sorting and separation

  • according to size and form: drum screening, 3D-screens, fine screens
  • according to weight and form: air separation, ballistic separation
  • according to special material properties: ferrous metals, non-ferrous metals, optical separation of pre-defined fractions, e.g. plastics/PVC, 
  • wood, glass

Drying

  • Bio-drying
  • Thermal drying  (belt dryer, drum dryer)
  • The result is a homogeneous refuse derived fuel.

ANDRITZ plants for the production of Refuse Derived Fuels (RDF)

contact us
ANDRITZ AG
Austria
+43 (316) 6902
ANDRITZ MeWa
Germany
+49 7056 925 0
ANDRITZ AB
Sweden
+46 720 58 29 49
ANDRITZ (CHINA) LTD
China
+86 757 8202 7602
downloads
  • ANDRITZ Recycling PDF : 2.3 MB
  • Waste to value

    Innovative technologies for sludge and reject handling, material separation and recovery, and production of renewable energy help you reduce dependency on purchased power or fossil fuels and eliminate landfilling of waste – thus improving your mill's profitability.

    PDF : 892 KB